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SS6642-50GXTR Arkusz danych(PDF) 1 Page - Silicon Standard Corp.

Numer części SS6642-50GXTR
Szczegółowy opis  3-Pin Simple Step-Up DC/DC Converter
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Producent  SSC [Silicon Standard Corp.]
Strona internetowa  http://www.siliconstandard.com
Logo SSC - Silicon Standard Corp.

SS6642-50GXTR Arkusz danych(HTML) 1 Page - Silicon Standard Corp.

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SS6642G
1/15/2005 Rev.2.10
3-Pin Simple Step-Up DC/DC Converter
FEATURES
DESCRIPTION
A guaranteed start-up from less than 0.9 V.
High efficiency.
Low quiescent current.
Fewer external components needed.
Low ripple and low noise.
Fixed output voltage: 2.7V, 3.0V, 3.3V, 3.7V,
4.5V and 5V.
Space-saving packages: SOT-23, SOT-89 and
TO-92.
APPLICATIONS
Pagers.
Cameras.
Wireless Microphones.
Pocket Organizers.
Battery Backup Suppliers.
Portable Instruments.
The SS6642G is a high efficiency step-up DC/DC
converter for applications using 1 to 4 NiMH bat-
tery cells. Only three external components are re-
quired to deliver a fixed output voltage of 2.7V,
3.0V, 3.3V, 3.7V, 4.5V or 5V. The SS6642G starts
up from less than 0.9V input with 1mA load. A
Pulse Frequency Modulation scheme optimizes
performance for applications with light output
loading and low input voltages. The output ripple
and noise are lower when compared with circuits
operating in PSM mode.
The PFM control circuit operating at a 100KHz
(max.) switching rate results in smaller passive
components. The space saving SOT-23, SOT-
89 and TO-92 packages make the SS6642G an
ideal choice for DC/DC converter for space con-
scious applications, such as pagers, electronic
cameras, and wireless microphones.
TYPICAL APPLICATION CIRCUIT
D1
SS12
VOUT
SW
GND
SS6642-xxG
C2
47
µF
+
VOUT
L1
100
µH
VIN
+
C1
22
µF
One Cell Step-Up DC/DC Converter
Pb-free, RoHS compliant.


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